Quick Answer: Which Of The Following Is A Path Function?

What is meant by state function?

In thermodynamics, a state function, function of state, or point function is a function defined for a system relating several state variables or state quantities that depends only on the current equilibrium thermodynamic state of the system (e.g.

gas, liquid, solid, crystal, or emulsion), not the path which the system ….

How work is a path function?

Each path will have different amount of work done. It is because work is a path function. Path function means a quantity that only depends on the path but not on initial and final States. … As you asked work done be is not the product of pressure and change in initial and final volume.

Is pressure a path function?

Pressure: Pressure is a measure of the average force exerted by the constituent molecules per unit area on the container walls. pressure does not depend on the path of the molecules and thus it is a state function.

Is enthalpy a path function?

Enthalpy is a state function because it is defined in terms of state functions. U, P, and V are all state functions. Their values depend only on the state of the system and not on the paths taken to reach their values. … Enthalpy is defined as H = U + PV.

Is work done dependent on path?

The work a conservative force does on an object is path-independent; the actual path taken by the object makes no difference. … Conservative forces are easier to work with in physics because they don’t “leak” energy as you move around a path — if you end up in the same place, you have the same amount of energy.

What is the function of output?

Output devices relay the response from the computer in the form of a visual response (monitor), sound (speakers) or media devices (CD or DVD drives). The purpose of these devices is to translate the machine’s response to a usable form for the computer user.

Which of the following is not a path function?

Heat and work are path functions because they depend on how a sysem changes from initial to final state, hence they are state functions. Thermal conductivity is mainly a function of the motion of the free electrons therefore property of a material, not a path function.

What are point and path functions give examples?

Difference between point function and path functionSr. no.Point FunctionPath Function7It is property of the systemIt is not the property of the system8Its examples are density, enthalpy, internal energy, entropy etcIts examples are Heat, work etc.6 more rows•May 13, 2019

Is Gibbs free energy a path function?

Gibbs free energy (G) is a state function since it depends on enthalpy (H), absolute temperature (T) and entropy (S), all of which are state…

Is kinetic energy a path function?

Is kinetic energy point function or path function? … Path functions are properties or quantities whose values depend on the transition of a system from the initial state to the final state. so the kinetic energy can not be termed as path function.

What is path and point function?

Path function and Point function are introduced to identify the variables of thermodynamics. Path function: Their magnitudes depend on the path followed during a process as well as the end states. … Point Function: They depend on the state only, and not on how a system reaches that state.

What is state and path function?

A state function is a property describes a particular state, without depending on the path taken to reach this state. In contrast, functions whose value depends on the path taken to get between two states are called path functions.

How do you determine a state function?

trivially: if a quantity is uniquely determined by the equilibrium state then it is a state function, otherwise it is not. ΔU is clearly not a state function, since by its very definition (ΔU=Ufinal−Uinitial) it is not determined uniquely by the state of the system: neither by the final, nor by the initial one.

Why Entropy is a state function?

State function is path independent,it depends only initial and final point. … Entropy is disoderness,which is also path independent and depend on it initial and final points.So entropy is a state function.

What are examples of path functions?

Examples of path functions include work, heat and arc length. In contrast to path functions, state functions are independent of the path taken. Thermodynamic state variables are point functions, differing from path functions.

Is internal energy a point function?

The internal energy per unit mass of the system is the specific internal energy, u. … Both of these energy transfer processes are path dependent, however, the internal energy is a function only of the state of the system.

What is difference between state function and path function?

A state function is a property whose value does not depend on the path taken to reach that specific value. In contrast, functions that depend on the path from two values are call path functions. Both path and state functions are often encountered in thermodynamics.

What does a state means?

State is defined as a territory with its own government and borders within a larger country. An example of a state is California. … The definition of a state is your current status or condition.